ulysses-you commented on code in PR #36856:
URL: https://github.com/apache/spark/pull/36856#discussion_r896301945
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/arithmetic.scala:
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@@ -53,6 +53,17 @@ case class UnaryMinus(
override def toString: String = s"-$child"
private lazy val numeric = TypeUtils.getNumeric(dataType, failOnError)
+ private lazy val unaryMinusFunc: Any => Any = dataType match {
Review Comment:
hmm, this would be called inside `eval` so a cached function is expected to
avoid invoke by every row
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